@Tuco has nailed it. We need a 6 person party. And not as a mod.

With healer, tank, lockpicker, wizard you are out your ability to play the character you want to play. If I want to play an archer I need a tank -- that means I need to deal without a lockpicker or wizard. Warlocks only make sense as a fifth wheel -- they don't really replace fighters and they don't replace wizards. Same goes for bards, etc.

This is BG3 and not BG: ______ BG2 is the standard and the standard is 6 person party and 18 NPCs.